Broken international characters: the file is written as UTF-8 and read as ANSI by Visual Studio

[jotabe-net]

If I use special characters in my code, like an accented u: ú, when the templates are rendered, and I open them in Visual Studio, the special characters doesn't look as expected. In this example ú appears where I should see the ú.

I've opened the file with Notepad++, and it detects is an UTF-8 file, and I see the special character as expected. If I try to see it as ANSI, I get the same result as in VS.

If I use Notepad++ to convert the file to ANSI, and see it in Visual Studio, it looks fine.

In this VS documentation page I can see:

By default, Visual Studio detects a byte-order mark to determine if the source file is in an encoded Unicode format, for example, UTF-16 or UTF-8. If no byte-order mark is found, it assumes the source file is encoded using the current user code page, unless you have specified a code page by using /utf-8 or the /source-charset option.

It looks like the problem is in the SaveMethod of src/Typewriter/Generation/Template.cs, which invokes File.WriteAllText. According to the remarks in the documentation:

This method uses UTF-8 encoding without a Byte-Order Mark (BOM)

If you keep reading, you'll see this:

If it is necessary to include a UTF-8 identifier, such as a byte order mark, at the beginning of a file, use the WriteAllText(String, String, Encoding) method overload with UTF8 encoding.

Saving it as UTF8 is a good idea beacuse by default tsc expects the files to be encoded as UTF8(see --charset in https://www.typescriptlang.org/docs/handbook/compiler-options.html)